ui: Fixing popupHostView css style

Change-Id: Icbd0177f9758308a39e38b5f57e8c2e3bc8ef55d
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1165670
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>